Microcontroladores

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ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip
ATSAM4LS8CA-AU

ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4LS8CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz, with 512 KB of FLASH program memory and 64 KB of SRAM, housed in a 100-pin TQFP (14 x 14 mm) surface-mount package. The device integrates Microchip (Atmel) picoPower technology for ultra-low power consumption and supports operating voltages from 1.68 V to 3.6 V across an industrial temperature range of -40 °C to +85 °C. A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, volatile and non-volatile memory, and a rich peripheral set on one silicon die. Within the embedded taxonomy, MCUs sit between simple 8-bit controllers (such as the ATmega family) and high-end application processors, with 32-bit ARM Cortex-M devices like the SAM4L occupying the mainstream performance-per-watt tier. The SAM4L family is specifically engineered around picoPower logic, multiple low-power modes, and a flexible clock tree to minimize active and standby current in battery-driven products. Key features of the ATSAM4LS8CA-AU include the Cortex-M4 core with single-cycle MAC and DSP extensions, 512 KB of embedded flash for application and library code, 64 KB of SRAM for data buffers and stack frames, and a peripheral event system that allows on-chip peripherals to interact without CPU intervention. The 100-pin TQFP (14 x 14 mm) package exposes the full peripheral set, including multiple USART, SPI, TWI, ADC, and timer channels needed for sensor fusion and motor control. Technically, the SAM4L architecture combines a high-performance 32-bit RISC core with hardware acceleration blocks optimized for low energy operation. The Cortex-M4 core executes from flash with deterministic interrupt latency, while the picoPower sleep modes, programmable clock dividers, and a peripheral event controller let applications stay in deep sleep for long stretches, waking only on peripheral triggers. This balance suits applications where average current draw, not peak compute, dominates the battery life equation. Typical applications include portable and battery-powered instrumentation, industrial sensor nodes, low-power wireless gateways, building automation controllers, and consumer human-interface products where a 48 MHz Cortex-M4 with generous 512 KB flash provides comfortable headroom for protocol stacks and graphics. The wide operating voltage range also makes the part attractive for energy-harvesting and 3.3 V system designs. Designers should budget SRAM carefully: 64 KB of SRAM is the family-variant ceiling, so buffers for communication stacks and RTOS use must be sized accordingly. Clock configuration directly affects dynamic current, so the programmable clock dividers and sleep modes should be leveraged in firmware. The 100-pin TQFP package requires standard JEDEC reflow profiles and a 4-layer PCB for clean signal routing. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in same-family alternatives, and design considerations, organized in a form factor optimized for engineering decisions.

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ATSAM4LS8CA-CFU - 32-bit 48MHz Cortex-M4 MCU 512KB | Microchip
ATSAM4LS8CA-CFU

ATSAM4LS8CA-CFU - 32-bit 48MHz Cortex-M4 MCU 512KB | Microchip

The Microchip Technology (Atmel) ATSAM4LS8CA-CFU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 512KB of embedded flash and 64KB SRAM, housed in a 100-ball VFBGA (7x7 mm) package operating from a 3.3V supply. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor-based MCU that combines the energy efficiency required by battery-powered systems with DSP-oriented instruction capability and single-cycle MAC. In the system hierarchy, the ATSAM4LS8CA-CFU sits within Microchip's SAM4L family of Cortex-M4 flash MCUs, which belongs to the broader ARM 32-bit MCU class and the general microcontroller (embedded processor) category. Key features include the 512KB (512K x 8) flash memory for program storage, a 48 MHz maximum CPU clock, and the ultra-low-power characteristics of the SAM4L series, which are designed for low active and sleep currents. The SAM4L series integrates flexible peripheral sets including serial communication interfaces (USART, SPI, TWI) and analog peripherals typical of the family, allowing a single MCU to replace multiple discrete interface and sensing ICs in compact designs. The ATSAM4LS8CA-CFU operates from a single 3.3V supply per the verified specifications. The VFBGA (Very Fine-Pitch Ball Grid Array) 7x7 mm, 100-ball format delivers a very small footprint, making it attractive for space-constrained boards where a TQFP-100 would be too large. BGA packages offer short interconnects that reduce loop inductance and improve signal integrity, but require controlled reflow assembly and inspection equipment. Typical applications include battery-powered industrial sensors, low-power IoT end nodes, portable instrumentation, and consumer devices requiring a 32-bit MCU with generous flash in a compact footprint. The 48 MHz Cortex-M4 core with hardware DSP instructions handles control loops and light signal processing without an external processor. When designing with the VFBGA package, plan the PCB for reflow soldering, controlled-impedance decoupling under the ball field, and consider X-ray inspection capability. Note that flash memory size within the SAM4L family scales the suffix (L2/L4/L8), enabling downward migration on compatible footprints. This page synthesizes distributor pricing (LCSC from $3.2958 as of 2026-09-20), availability across 7 distributors via Octopart, and drop-in family alternatives not found in the manufacturer datasheet.

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ATSAM4N16BA-AUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16BA-AUR

ATSAM4N16BA-AUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz, with 1 MB of embedded Flash, 80 KB of SRAM, and 8 KB of ROM containing an embedded bootloader, housed in a 64-pin LQFP (10x10 mm) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog converters. The ARM Cortex-M4 is a 32-bit RISC processor core widely used in embedded systems; the SAM4N family sits within Microchip's (formerly Atmel) SMART ARM-based MCU portfolio, positioned below the SAM4S as a lower-BOM-cost migration path while remaining pin-to-pin compatible with SAM3N, SAM3S, SAM4S (64/100-pin versions) and SAM7S legacy 64-pin products. Key features of the ATSAM4N16BA include the Cortex-M4 core with DSP instructions, Thumb-2 instruction set, and a Memory Protection Unit (MPU), enabling efficient signal processing in a low-cost general-purpose MCU. The 1 MB Flash supports large application code, while 80 KB of SRAM provides working memory for buffers and stacks. The device operates from a 1.62 V to 3.6 V single supply at 2.5 V or 3.3 V, suiting battery-powered designs. The -AUR suffix denotes industrial temperature range (-40C to +85C), green/RoHS package, and tape-and-reel packing for automated assembly. Technically, the SAM4N implements the ARMv7E-M architecture with Harvard bus structure, and the DSP extension accelerates multiply-accumulate operations used in digital filtering and control loops. The embedded Flash executes at full core speed with pre-fetch buffering, and the MPU supports functional-safety-oriented software partitioning. Typical applications include industrial control and automation nodes, consumer and building appliances, metering front ends, and battery-powered portable instruments that need Cortex-M4 arithmetic performance without the cost of the SAM4S peripheral set. When designing with this device, remember it is a cost-optimized family: verify that the specific peripheral mix (for example USB, which SAM4N omits relative to SAM4S) meets system requirements before committing the footprint, and exploit pin compatibility for risk-free family migration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16BA-MU - 100MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4N16BA-MU

ATSAM4N16BA-MU - 100MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip Technology ATSAM4N16BA-MU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1 MB (1024 KB) embedded Flash and 80 KB SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, non-volatile program memory, RAM, and peripherals such as timers, serial interfaces, and analog converters. Within the power-management hierarchy of embedded systems, MCUs sit at the application-control layer, executing firmware that coordinates sensors, actuators, and communication. The SAM4N family belongs to Microchip (formerly Atmel) ARM-based SAM product line, positioned as a cost-reduced migration path from the SAM4S series. Key features of the ATSAM4N16BA include the ARM Cortex-M4 core with DSP instructions and the Thumb-2 instruction set, a Memory Protection Unit (MPU), and industrial temperature operation from a 1.62 V to 3.6 V supply. The device is specified as a GREEN, MRL A package for industrial applications per distributor listings. Architecturally, the Cortex-M4 core executes Thumb-2 code with hardware DSP extensions, and the MPU supports functional-safety-oriented memory partitioning. The 1 MB single-cycle Flash array and 80 KB SRAM provide headroom for protocol stacks and data logging without external memory. Supply operation at 2.5 V or 3.3 V rails simplifies system power design. Typical applications include industrial automation nodes, consumer and building-control systems, and cost-sensitive control panels where the SAM4N offers SAM4S-class performance at a reduced bill-of-materials cost. Pin-to-pin compatibility with SAM3N, SAM3S, SAM4S, and SAM7S devices enables board reuse across performance tiers. When designing, budget Flash margin for over-the-air or field updates, and verify peripheral-set differences against the SAM4S before direct code migration, since SAM4N omits some SAM4S peripherals as part of its cost reduction. This page synthesizes verified distributor pricing, pin-compatible alternatives across the Microchip SAM portfolio, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16BA-MUR - 100MHz Cortex-M4, 1MB Flash MCU | Microchip
ATSAM4N16BA-MUR

ATSAM4N16BA-MUR - 100MHz Cortex-M4, 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16BA-MUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 1 MB (1024 KB) embedded Flash and 80 KB SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad on tape and reel. Operating from 1.62V to 3.6V, it integrates a Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set. A microcontroller (MCU) is a single-chip computer combining a processor core, memory, and peripherals on one die; within the power/performance hierarchy, the SAM4N sits above Cortex-M0+ families such as SAM3N and below the high-throughput SAM4E/S series, making it a general-purpose industrial MCU for cost-sensitive 32-bit designs. Key features include the 100 MHz Cortex-M4 core with hardware DSP instructions for efficient signal processing, 1 MB of zero-wait-state flash for large code images, pin-to-pin compatibility with the SAM3N, SAM3S, SAM4S (64/100-pin) and SAM7S legacy 64-pin products, and an industrial temperature rating of -40C to +85C. The green, RoHS-compliant QFN package supports lead-free reflow assembly. Architecturally, the SAM4N employs an ARMv7E-M Cortex-M4 core with a nested vectored interrupt controller (NVIC) and MPU for functional robustness. Analog capability includes 10-bit ADC peripherals, while serial connectivity covers UART, SPI, I2C/TWI interfaces typical of the SAM4N family. Typical applications include industrial control and automation nodes, consumer appliance interfaces, and building/lighting control where 1 MB of flash enables OTA-updatable firmware without external memory. Design consideration: supply the part at 3.3V for maximum peripheral performance, and verify the 64-pin QFN land pattern against the exposed-pad footprint for reliable ground return. This page synthesizes distributor pricing, drop-in cross-references within the SAM family, and practical sourcing data not found in the manufacturer datasheet.

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ATSAM4N16CA-AU - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-AU

ATSAM4N16CA-AU - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 100 MHz with 1 MB (1024 KB) of embedded flash memory and 80 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single silicon die, sitting at the heart of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4N family is Microchip (formerly Atmel) SMART ARM-based flash MCU portfolio, and the SAM4N16C variant is positioned as the entry point to the Cortex-M4-based flash MCU lineup. Key features include the ARM Cortex-M4 core with hardware DSP instructions and a Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust firmware partitioning, and single-cycle multiply-accumulate for digital signal processing workloads such as filtering and sensor fusion. The 1 MB flash supports field firmware updates, while the 80 KB SRAM provides generous buffering for communication stacks and control algorithms. Technically, the ATSAM4N16CA-AU operates from a 1.62 V to 3.6 V supply (2.5 V / 3.3 V typical rails) and is specified for industrial temperature ranges (part suffix -I, green LQFP package, MRLA). The device is pin-to-pin compatible with the SAM3N, SAM3S (48/64/100-pin versions), SAM4S (64/100-pin versions), and SAM7S legacy 64-pin products, offering a low-risk migration path for existing boards seeking a performance upgrade to Cortex-M4 with DSP capability. Typical applications include industrial control and factory automation nodes, consumer and industrial HMI panels, metering and sensing systems, and motor-adjacent control logic where DSP instructions accelerate control loops. Design consideration: because the Cortex-M4 DSP instructions and MPU are the main deltas versus the older Cortex-M3 SAM3S parts, verify that your toolchain and CMSIS headers target the M4 core before migrating. This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility data, and practical design notes not found in a single manufacturer document.

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ATSAM4N16CA-CFU - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-CFU

ATSAM4N16CA-CFU - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CFU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1 MB (1024 KB) embedded Flash and 80 KB SRAM, housed in a 100-ball VFBGA (7x7 mm) package from the SAM4N series. A 32-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the heart of embedded systems within the broader hierarchy of ARM-based semiconductor devices. The SAM4N family is Microchip/Atmel's entry point to the ARM Cortex-M4-based Flash MCU portfolio, positioned below the SAM4S series as a reduced-BOM-cost migration path for cost-sensitive embedded designs. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust software partitioning, 1024 KB of zero-wait-state embedded Flash, 80 KB of SRAM, and operation from a 1.62 V to 3.6 V single supply. The industrial temperature rating (Mouser lists it as IND TEMP, MRL A) and green/RoHS-compliant VFBGA package suit compact, high-density boards where a 7x7 mm 100-ball footprint saves PCB area versus 100-pin QFP alternatives. Technically, the Cortex-M4 core at 100 MHz provides DSP-capable arithmetic (single-cycle MAC) while retaining the low power consumption that makes the SAM4N series ideal for industrial automation, consumer and appliance, and energy metering markets, according to the Microchip SAM4N family datasheet (document 60001422B). The series offers pin-to-pin compatibility with SAM4S, SAM3S, SAM3N, and legacy SAM7S devices in matching 100-pin packages, facilitating in-portfolio migration without PCB rework. Typical applications include energy meters, industrial sensors and actuators, appliance control boards, and building automation nodes - all cases where Cortex-M4 DSP throughput, large Flash for firmware growth, and low BOM cost matter simultaneously. Design consideration: the VFBGA package requires careful PCB fanout and is best reflowed on boards designed for BGA inspection; if hand assembly or easy rework is required, the pin-compatible QFP version in the same family is preferable. Flash write-endurance and supply-decoupling guidance follow the SAM4N family datasheet. This page synthesizes distributor pricing (DigiKey, Mouser, LCSC, Octopart), drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single decision-ready reference as of 2026-09-20.

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ATSAM4N16CA-CFUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-CFUR

ATSAM4N16CA-CFUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CFUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1024 KB of embedded Flash and 80 KB of SRAM, housed in a 100-ball VFBGA (7x7 mm) package for industrial temperature ranges. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest level of the embedded-system hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4N family sits within Microchip's (formerly Atmel) ARM-based MCU portfolio and belongs to the broader class of 32-bit microcontrollers used across industrial, consumer, and IoT platforms. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), and 1 MB (1M x 8) of Flash memory. The SAM4N series is positioned as the cost-reduced migration path from the SAM4S family, dropping USB and lowering BOM cost while retaining pin compatibility. Architecturally, the device operates from a 1.62 V to 3.6 V supply (per the ATSAM4N16C product page) with an industrial temperature rating, and integrates typical SAM4N peripherals such as UART/USART, SPI, TWI (I2C), timers, ADC, and PWM controllers. Firmware development uses standard ARM toolchains plus Microchip (Atmel) Studio / MPLAB X ecosystem, and the Thumb-2 and DSP instruction support enables efficient digital filtering and control math. Typical applications include industrial automation and sensor acquisition nodes, motor control and power-conversion supervision, and consumer/IoT devices requiring dense Flash for OTA-friendly firmware images. The 7x7 mm VFBGA suits space-constrained boards needing high integration without external memory. Design consideration: as a VFBGA package, the part requires controlled-impedance PCB escape routing and reflow assembly; verify ball-map fanout early. Select the CFU tray variant for prototyping if reel quantities are unnecessary. This page synthesizes distributor pricing, drop-in SAM4N/SAM4S family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16CA-CU - 100MHz Cortex-M4 1MB MCU | Microchip
ATSAM4N16CA-CU

ATSAM4N16CA-CU - 100MHz Cortex-M4 1MB MCU | Microchip

The Microchip Technology ATSAM4N16CA-CU is a 32-bit ARM Cortex-M4 flash microcontroller running at 100 MHz with 1 MB of flash memory and 80 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. Operating from 2.5 V or 3.3 V supplies over an industrial temperature range, it targets entry-level, cost-sensitive embedded designs. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, non-volatile program memory, volatile data memory, and peripherals into one chip. Within the power-management hierarchy of embedded systems, the MCU sits at the heart of firmware execution, sensor interfacing, and actuator control, sitting above discrete logic and below application processors. Key features of the SAM4N16C include the ARM Cortex-M4 core with DSP-friendly instruction extensions, 1 MB of single-cycle flash organized as 1M x 8, 80 KB of SRAM for data buffers and stacks, and the low power consumption that characterizes the SAM4N series. The -CU ordering code denotes the TFBGA GREEN, industrial temperature, MRL A variant in tray packaging. Technically, the SAM4N family balances compute throughput against static and dynamic power draw. The Cortex-M4 pipeline delivers deterministic real-time response while the on-chip flash controller supports the full 100 MHz core clock. Peripherals typical of the SAM4N series - serial communication interfaces, timers, ADC channels, and general-purpose I/O - let one chip replace a multi-chip logic and control solution in compact BGA-based boards. Typical applications include industrial automation nodes, consumer and appliance control boards, and energy metering products - three markets Microchip explicitly names for the SAM4N series. The 9x9 mm TFBGA footprint suits space-constrained, two-sided PCB designs where QFP packages would consume too much board area. Design consideration: because the SAM4N series is pin-to-pin compatible with the SAM4S, SAM3S, SAM3N, and SAM7S families per the Microchip datasheet, reserve board layout reuse by choosing the memory density that matches long-term firmware growth - the 512 KB ATSAM4N8CA-CU shares the same footprint if cost dominates. This page synthesizes distributor pricing tiers, drop-in alternatives from the SAM4N and SAM4S families, design notes, and an FAQ not found on the manufacturer datasheet alone.

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ATSAM4N16CA-CUR - Cortex-M4 100MHz 1MB Flash MCU | Microchip
ATSAM4N16CA-CUR

ATSAM4N16CA-CUR - Cortex-M4 100MHz 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz, with 1 MB (1024 KB) of embedded Flash and 80 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package for industrial-temperature operation. A microcontroller unit (MCU) integrates a processor core, memory, and peripherals on a single die, forming the lowest layer of the embedded-system hierarchy that spans MCUs, microprocessors (MPUs), and system-on-chip (SoC) devices. The SAM4N family belongs to Microchip (formerly Atmel) ARM-based SAM portfolio, built around the ARM Cortex-M4 core with Thumb-2 instruction set, DSP instructions, and a Memory Protection Unit (MPU). Key features include the 100 MHz Cortex-M4 core with hardware DSP instructions for fast multiply-accumulate operations, 1 MB of zero-wait-state embedded Flash for code and data storage, and rich serial connectivity with seven UARTs, four SPIs, and three I2C interfaces - enabling multi-protocol designs without external expanders. The device operates from a 1.62V to 3.6V supply (2.5V/3.3V typical rails), and offers pin-to-pin compatibility with SAM3S, SAM3N, SAM4S (64/100-pin versions), and SAM7S legacy devices, providing a low-risk migration path within the SAM portfolio. SAM4N positions itself as the ideal migration from SAM4S for applications requiring reduced BOM cost. Typical applications include industrial control and factory automation nodes, consumer and building appliances, motor-control auxiliary boards, and general-purpose embedded systems that need headroom for protocol bridging across multiple UART/SPI/I2C buses. When designing with this device, verify that the Flash/SRAM split (1 MB/80 KB) matches your application footprint, and account for the industrial operating range of -40C to +85C in thermal placement on the PCB. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N8AA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4N8AA-AU

ATSAM4N8AA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4N8AA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 100 MHz with 512 KB of embedded flash memory and 64 KB of SRAM, housed in a 48-pin LQFP (7x7 mm) surface-mount package. It operates from 1.62 V to 3.6 V across the industrial temperature range. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded-system hierarchy (MCU -> SoC -> application processor -> computer). The ARM Cortex-M4 core used here executes the Thumb-2 instruction set and includes DSP instructions for efficient digital signal processing plus a Memory Protection Unit (MPU) for robust RTOS deployments. Key differentiating features of the ATSAM4N8AA-AU include five USARTs, two SPI interfaces, and three I2C (TWI) controllers for fast serial communication, an 8-channel 12-bit ADC for analog sensing, PWM outputs, multiple timers, and a real-time clock (RTC). The 100 MHz Cortex-M4 with single-cycle MAC delivers roughly 125 DMIPS, providing DSP-class throughput in a low-power general-purpose MCU. Architecturally, the device belongs to Microchip's (formerly Atmel) SAM4N entry-point family within the broader SAM4 ARM Flash MCU portfolio. The flash-based program memory supports in-system programming via the Serial Wire Debug (SWD) or JTAG interface, and the MPU enables safe memory partitioning for FreeRTOS or Zephyr-class operating systems. Typical applications include industrial control panels, motor-adjacent sensing nodes, building automation controllers, and consumer appliances where multiple serial buses, ADC channels, and PWM channels must run concurrently under a single 3.3 V rail. Design consideration: supply the device from a clean 3.3 V rail (1.62 V to 3.6 V absolute range) and decouple each VDD pin with 100 nF ceramics; the ADC accuracy degrades with noisy supplies, so segregate analog grounding when using all 8 channels. This page synthesizes distributor pricing, drop-in family alternatives, pin-availability guidance, and practical design notes not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-20.

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ATSAM4N8BA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4N8BA-AU

ATSAM4N8BA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-AU is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512 KB flash memory and 64 KB SRAM, housed in a 64-pin LQFP (10 x 10 mm) surface-mount package. It operates from a 1.62V to 3.6V supply and integrates six USARTs, three SPIs, and three I2C interfaces for high-speed serial communication. A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, program memory, data memory, and peripherals on one die. Within the embedded hierarchy, the ATSAM4N8BA-AU belongs to the SAM4N family of ARM Cortex-M4-based microcontrollers, which sit under the broader categories of 32-bit MCUs, embedded processors, and system-on-chip devices used in industrial automation, consumer appliances, and energy metering. Key features include a 10-channel 12-bit ADC for accurate analog acquisition, a 10-bit DAC for waveform generation, PWM channels for motor and power control, general-purpose timers, and a real-time clock (RTC) for timekeeping in battery-backed systems. The Cortex-M4 core delivers single-cycle multiply-accumulate DSP instructions and hardware floating-point capability, allowing digital filtering and control-loop math to run efficiently at 100 MHz without an external DSP. Architecturally, the SAM4N series balances performance and low power consumption, making it well suited for always-on metering and automation nodes. According to the Microchip SAM4N family datasheet (60001422B), the series offers pin-to-pin compatibility with SAM4S, SAM3S, SAM3N, and SAM7S devices, enabling straightforward migration within the portfolio as memory or performance requirements change. Typical applications include industrial automation controllers, energy meters, consumer appliances, IoT sensor nodes, and motor control boards, where the combination of multiple USART/SPI/I2C buses, a 12-bit ADC, and PWM outputs covers most sensing and actuation needs from a single chip. A key design consideration is supply filtering: with a 1.62V to 3.6V operating range, decouple each VDD pin with 100 nF ceramics placed close to the package, and keep the analog supply pin fed through an RC filter from the main 3.3V rail to preserve ADC accuracy. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives across the SAM4N, SAM4S, and SAM3S families, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4N8BA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8BA-AUR

ATSAM4N8BA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512 KB flash and 64 KB SRAM, housed in a 64-pin LQFP (10x10 mm) surface-mount package rated for industrial temperature ranges. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest layer of the embedded-computing hierarchy: semiconductor -> microcontroller (MCU) -> embedded system. The ARM Cortex-M4 core used here is a 32-bit RISC processor optimized for deterministic real-time control, placing the ATSAM4N8B within Microchip's SAM4N family of general-purpose flash MCUs. Key features of the ATSAM4N8BA-AUR include 512 KB (512K x 8) of embedded flash memory for code and data storage, 64 KB of SRAM for runtime variables, and a rich peripheral set for communication: six USARTs, three SPIs, and three I2C interfaces. These serial resources make the device well suited to designs that must talk to multiple external ICs simultaneously. Technical depth comes from the Cortex-M4 architecture, which provides single-cycle multiply-accumulate DSP instructions and fast interrupt handling, allowing the 100 MHz core to handle both control loops and moderate signal processing without an external DSP. One integrated 10-channel 1 Msps-class ADC (per Microchip product data) offloads analog-to-digital conversion from external components. Typical applications include industrial automation nodes, motor control and sensor-hub boards, consumer appliance controllers, and multi-bus communication gateways that exploit the six USARTs and three SPI ports. A key design consideration is the industrial temperature rating (-40C to +85C per distributor data): confirm your worst-case ambient and self-heating stay within this window, and verify supply requirements in the manufacturer datasheet before finalizing power-tree design. This page synthesizes distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not found in the standard manufacturer datasheet, providing engineers with a decision-ready product profile.

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ATSAM4N8BA-MU - 100MHz Cortex-M4 512KB Flash MCU | Microchip
ATSAM4N8BA-MU

ATSAM4N8BA-MU - 100MHz Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4N8BA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at 100 MHz with 512KB of flash memory and 64KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest level of the embedded computing hierarchy: MCU -> embedded processor -> microprocessor system. The SAM4N family sits within Microchip (formerly Atmel) ARM-based flash MCU portfolio as its entry point to the Cortex-M4 class, and is pin-to-pin compatible with the SAM4S, SAM3S, SAM3N and SAM7S families, which enables straightforward migration within the portfolio. Key features include six USARTs, three SPI interfaces and three I2C interfaces for high-speed serial communication, a 10-channel 12-bit ADC, a 10-bit DAC, PWM outputs, timers and an RTC. The device operates from a single 1.62V to 3.6V supply and is rated for industrial temperature ranges, with a green, RoHS-compliant package. Technically, the ARM Cortex-M4 core delivers efficient 32-bit computation with deterministic interrupt handling, while the generous serial connectivity (six USARTs plus three SPI plus three I2C) makes the device well suited to multi-protocol designs that would otherwise require external communication controllers. The 10-channel, 12-bit ADC supports multi-sensor front ends, and the complementary 10-bit DAC enables closed-loop analog control without external conversion ICs. Typical applications include industrial automation, consumer and appliance control, energy metering, and smart-home IoT nodes - all domains where the SAM4N family's balance of 100 MHz performance, low power consumption, and rich peripherals fits directly, according to the Microchip SAM4N family datasheet (document 60001422B). When designing with this device, keep the 1.62V to 3.6V supply range in mind for battery-powered designs, and use the exposed pad of the 64-QFN package as the ground return to improve thermal and signal-integrity performance. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4N8BA-MUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8BA-MUR

ATSAM4N8BA-MUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-MUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512KB of flash memory and 64KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest level of the embedded processing hierarchy: microcontroller unit (MCU) -> embedded processor -> microprocessor -> computing system. The SAM4N family belongs to Microchip's (formerly Atmel) SAM4 line of ARM Cortex-M4-based flash MCUs, targeting cost-sensitive embedded control applications that need 32-bit performance without floating-point heavy workloads. Key features of the ATSAM4N8B device include six USARTs, three SPI interfaces, and three I2C/TWI interfaces for fast serial communication, plus a 10-channel 12-bit ADC, a 10-bit DAC, PWM channels, timers, and a real-time clock (RTC). The supply range of 1.62V to 3.6V allows direct battery operation from single-cell lithium chemistry or 3.3V industrial rails. Architecturally, the ARM Cortex-M4 core at 100 MHz delivers approximately 125 DMIPS with single-cycle multiply and hardware division, while the 512KB single-cycle flash and 64KB SRAM support large protocol stacks and data buffers typical of industrial gateways and sensing nodes. Typical applications include industrial automation nodes, motor control and PWM-driven power stages, sensor hubs using the 12-bit ADC, and building/HVAC controllers that rely on the RTC and multiple serial ports. Design consideration: the QFN exposed pad is the main ground/thermal path and must be soldered to a solid ground pour; also budget supply decoupling across all VDD/VDDIO pairs given the multi-rail 1.62V to 3.6V architecture. This page synthesizes distributor pricing (as of 2026-09-20), drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N8CA-AU - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8CA-AU

ATSAM4N8CA-AU - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8CA-AU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 512 KB of embedded Flash and 64 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals on one die. Within the power-management hierarchy of embedded systems, an MCU sits at the application layer, replacing multi-chip processor-plus-peripheral designs. The SAM4N family belongs to Microchip's (formerly Atmel's) ARM-based 32-bit Flash MCU portfolio, positioned as the reduced-BOM-cost entry point to the Cortex-M4 line. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), and pin-to-pin compatibility with the SAM4S, SAM3S, SAM3N, and SAM7S families for easy migration. According to the SAM4N family datasheet, this pin-compatibility makes ATSAM4N8CA-AU an ideal migration path from SAM4S designs that require lower cost. Technically, the device combines a Harvard-architecture Cortex-M4 running Thumb-2 code with single-cycle DSP multiply-accumulate instructions, delivering DSP-class throughput without a separate DSP. Embedded Flash allows in-system reprogramming, while the MPU supports robust, partitioned firmware. The 100-LQFP package provides generous GPIO and peripheral access for industrial designs. Typical applications include industrial automation, consumer and appliance control, and energy metering, markets explicitly targeted by the SAM4N series because of its low power consumption and peripheral integration. Design consideration: the device operates from 2.5 V to 3.3 V supply; verify supply rails and decoupling against the SAM4N datasheet electrical characteristics before layout. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N8CA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8CA-AUR

ATSAM4N8CA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8CA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512 KB embedded Flash and 64 KB SRAM, housed in a 100-pin LQFP (14 x 14 mm) package delivered on tape and reel. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, forming the lowest layer of the embedded-system hierarchy: MCU -> embedded processor -> system-on-chip -> computing platform. The SAM4N family belongs to Microchip (formerly Atmel) SMART ARM-based MCU portfolio and targets cost-optimized industrial and consumer designs that still need 32-bit processing headroom. Key features include DSP instructions and a Thumb-2 instruction set on the Cortex-M4 core, a Memory Protection Unit (MPU) for robust firmware partitioning, and rich serial connectivity: seven USARTs, four SPIs, and three I2C (TWI) interfaces for fast peripheral communication. Analog capability covers a 16-channel 12-bit ADC and a 10-bit DAC, complemented by PWM channels, timers, and an RTC for real-time clocked applications. The device operates from a 1.62V to 3.6V supply, supporting both 1.8V and 3.3V systems. Architecturally, the SAM4N is the ideal migration path from the SAM4S for applications requiring reduced BOM cost, and it offers pin-to-pin compatibility with Atmel SAM3S, SAM3N, and SAM7S devices in the same packages, which simplifies in-portfolio upgrades without PCB redesign. Typical applications include industrial control panels, sensor hubs and data loggers exploiting the 16-channel ADC, motor and lighting control using PWM and timers, and building automation nodes that leverage the multiple USART/SPI/I2C ports. Design consideration: run the core at 100 MHz from a 3.3V rail and budget decoupling on all VDD/VDDIO pairs; the LQFP-100 footprint also leaves room to drop in higher-memory SAM4N16C variants later. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N8CA-CFU - 100MHz Cortex-M4 512KB MCU | Microchip
ATSAM4N8CA-CFU

ATSAM4N8CA-CFU - 100MHz Cortex-M4 512KB MCU | Microchip

The Microchip Technology ATSAM4N8CA-CFU is a 32-bit ARM Cortex-M4 flash microcontroller running at 100 MHz with 512KB (512K x 8) of embedded Flash and 64KB (64K x 8) of SRAM, housed in a 100-ball VFBGA (7x7 mm) package for industrial temperature ranges. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, non-volatile program memory, RAM, and a rich set of peripherals onto one die. Within the power-management hierarchy of embedded systems, the SAM4N family sits in Atmel/Microchip's entry-point segment of the Cortex-M4-based Flash MCU portfolio, positioning itself below the SAM4S while remaining pin-to-pin compatible with the SAM3S, SAM3N and SAM7S families. Key features include the ARM Cortex-M4 core with DSP-capable instructions, a supply voltage window of 1.62V to 3.6V (with an internal 1.2V core regulator), 100 MHz maximum core speed, 512KB of on-chip Flash for firmware, and a reduced-BOM-cost peripheral set tailored for cost-sensitive industrial designs. The -C temperature suffix denotes an industrial temperature grade, and the package is lead-free, green (halogen concern free) with MRL compliance per Microchip's product pages. Technically, the device leverages the Cortex-M4 3-stage pipeline Harvard architecture with a nested vectored interrupt controller (NVIC), single-cycle multiply, and Thumb-2 instruction set. Compared with the SAM4S family, the SAM4N removes USB and some analog blocks to reduce cost, making it the ideal migration path when a SAM4S design does not need those features. Typical applications include industrial control nodes, consumer appliances, metering front-ends, and general-purpose embedded control where 512KB Flash and the compact 7x7 mm VFBGA footprint support space-constrained PCB designs. A key design consideration: the VFBGA ball grid array requires controlled-impedance, fine-pitch PCB fabrication and X-ray inspection capability; verify your contract manufacturer supports 0.8 mm pitch BGA assembly before committing to this package. This page synthesizes distributor pricing links, drop-in cross-references within the SAM4N/SAM3S/SAM4S families, and practical packaging and assembly notes not consolidated in the manufacturer datasheet.

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ATSAM4N8CA-CU - 100MHz Cortex-M4 512KB MCU | Microchip
ATSAM4N8CA-CU

ATSAM4N8CA-CU - 100MHz Cortex-M4 512KB MCU | Microchip

The Microchip Technology ATSAM4N8CA-CU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 512 KB of embedded Flash and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. An ARM Cortex-M4-based flash microcontroller is a compact system-on-chip that combines a 32-bit RISC processor core with non-volatile program memory, static RAM, and a rich set of peripherals on a single die. Within the power-management hierarchy of embedded systems, it occupies the general-purpose MCU tier, sitting between entry-level Cortex-M0/M0+ MCUs and higher-performance Cortex-M7 devices. The Cortex-M4 core adds a hardware FPU-class DSP instruction set, single-cycle MAC, and a Memory Protection Unit (MPU), executing the Thumb-2 instruction set. Key differentiating features include the 512 KB zero-wait-state-capable embedded Flash, 64 KB SRAM for buffers and stacks, a multi-layer bus matrix, and cost-optimized peripheral set aimed at the SAM4N family position as the entry point to Microchip's Cortex-M4 flash MCU portfolio. The industrial temperature rating and green, MSL-controlled TFBGA package support demanding assembly flows. Technically, the SAM4N implements the ARMv7E-M architecture with DSP extension instructions that accelerate filter loops and control algorithms common in embedded sensing. The on-chip ADC, multiple serial interfaces (USART, SPI, TWI), timers, and PWM channels allow single-chip designs that previously required external analog and communication components, reducing BOM cost. According to the manufacturer documentation, the SAM4N series offers pin-to-pin compatibility with Atmel SAM3S, SAM3N, and SAM7S devices, easing migration within the portfolio and serving as a cost-reduced migration path from the SAM4S. Typical applications include industrial control and automation nodes, consumer appliance control panels, metering front ends, and embedded sensing systems that need DSP-class math at 100 MHz without the cost of the SAM4S family. A key design consideration is power distribution: the device uses a 1.2V core with 3.3V I/O, so core supply regulation and decoupling per the datasheet ball map must be followed carefully. Verify Flash wait-state settings against the 100 MHz maximum clock. This page synthesizes distributor pricing, drop-in family alternatives, and practical design guidance not found in a single manufacturer document.

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ATSAM4N8CA-CUR - 100MHz Cortex-M4 512KB Flash MCU | Microchip
ATSAM4N8CA-CUR

ATSAM4N8CA-CUR - 100MHz Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4N8CA-CUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 512 KB of embedded Flash and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package for industrial temperature ranges. A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and peripherals on one die. The ATSAM4N8CA belongs to the SAM4N family of ARM Cortex-M4-based MCUs, which sits within the broader hierarchy of 32-bit microcontrollers -> ARM embedded processors -> semiconductor integrated circuits. The SAM4N series is positioned as a reduced-BOM-cost migration path from the SAM4S family for cost-sensitive embedded designs. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), and 512 Kbytes of on-chip Flash with 64 Kbytes of SRAM. These DSP extensions accelerate filtering and control math, while the MPU supports functional-safety-oriented software partitioning. The 100 MHz clock delivers roughly 125 DMIPS-class performance for real-time embedded control. Architecturally, the device leverages Atmel/Microchip's SAM4 platform with an advanced interrupt controller, multi-layer bus matrix, and low-power modes typical of the SAM4 family, enabling efficient peripheral servicing and reduced active power consumption in battery-aware or always-on industrial nodes. Typical applications include industrial automation and control nodes, consumer and building-control systems, and data-logging or sensor-hub designs where 512 KB of code space and a 9x9 mm BGA footprint justify a high-integration MCU. When designing with this part, note that the fine-pitch TFBGA balls demand controlled-impedance, high-density PCB fabrication; confirm your assembly house supports 0.8 mm-pitch BGA placement before layout. This page synthesizes distributor pricing, drop-in alternatives, pin-count guidance, and practical design notes not consolidated in the manufacturer datasheet.

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ATSAM4S16BA-AN - 120MHz Cortex-M4, 1MB Flash MCU | Microchip
ATSAM4S16BA-AN

ATSAM4S16BA-AN - 120MHz Cortex-M4, 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4S16BA-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 1 MB of dual-bank embedded Flash, 128 KB of SRAM, and 47 GPIO, packaged in a 64-pin LQFP (10 x 10 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals into one package, sitting at the device level of the embedded-systems hierarchy below system-on-chip and above discrete logic. The SAM4S family belongs to Microchip's ARM-based SAM portfolio, using the 32-bit ARM Cortex-M4 RISC processor with DSP instructions and a Thumb-2 instruction set, plus a Memory Protection Unit (MPU) for robust software partitioning. Key features include a 1.62 V to 3.6 V operating supply, 1 MB of ECC-protected dual-bank Flash with Security Bit and lock regions, and rich connectivity: I2C, SPI, UART/USART, SSC (I2S), IrDA, memory-card interfaces, and USB. Peripheral set covers DMA, PWM, watchdog timer, brown-out detect/reset, and power-on reset, enabling compact single-chip designs. Architecture highlights include the Cortex-M4 DSP extension set for single-cycle MAC operations, fast Flash with prefetch for zero-wait-state execution at lower frequencies, and efficient power consumption of roughly 200 uA/MHz as published on the Microchip SAM4S16 product page. The dual-bank Flash architecture supports safe in-application programming and firmware update schemes. Typical applications include industrial control and automation nodes, consumer and portable devices, motor control with PWM peripherals, and USB-connected instrumentation. The 47 I/O count and 64-LQFP footprint suit compact, moderately pin-count-limited boards. Design consideration: keep decoupling capacitors close to all VDD/VDDIO pins and respect the 1.62 V to 3.6 V I/O range; the plastic LQFP 10 x 10 body needs no heatsink but benefits from solid ground pours. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing tiers, verified drop-in alternatives, and practical design notes in one place.

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ATSAM4S16BA-MU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16BA-MU

ATSAM4S16BA-MU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16BA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 1 MB of dual-bank embedded Flash with ECC and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) surface-mount package. It operates from a single 1.62V to 3.6V supply and achieves approximately 200 uA/MHz active power consumption. A flash microcontroller (MCU) integrates a processor core, program memory, data memory, and peripherals on a single die, forming the complete control engine of an embedded system. Within the power management hierarchy of embedded design, an MCU sits above discrete logic and below application processors: it executes deterministic real-time control loops, manages communication peripherals, and handles signal processing workloads such as those enabled by the Cortex-M4 DSP instruction set. Key differentiating features of the ATSAM4S16BA-MU include a 2 Kbytes instruction cache that sustains near-zero-wait-state execution from Flash at 120 MHz, a Memory Protection Unit (MPU) for robust task isolation, a DSP instruction set with Thumb-2 encoding for efficient signal processing, and dual-bank Flash with ECC, Security Bit, and lock regions enabling safe in-application firmware updates. The multi-layer bus matrix and multi-channel DMA support high data-rate communication without CPU bottlenecking. Architecturally, the device is built on the high-performance ARM Cortex-M4 core and integrates Atmel/Microchip Flash read accelerator technology. The dual-bank memory organization allows one bank to execute code while the other is erased or programmed, a critical capability for field-upgradable industrial products that cannot tolerate downtime. ECC on Flash protects against single-bit errors in noisy environments. Typical applications include industrial control and automation nodes, consumer appliances, PC peripherals, and portable data-acquisition instruments. The 200 uA/MHz efficiency and wide 1.62V to 3.6V supply range also suit battery-powered designs that still need DSP-grade throughput. When designing with this MCU, budget the power architecture around the 1.62V to 3.6V supply window and exploit the pin-to-pin compatibility with SAM3N/SAM3S/SAM4N/SAM7S (64- and 100-pin versions) to simplify migration; verify USB and peripheral count differences before swapping families. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found in the manufacturer datasheet, as of 2026-09-20.

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ATSAM4S16BA-UUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16BA-UUR

ATSAM4S16BA-UUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip ATSAM4S16BA-UUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 1 MB dual-bank embedded Flash, 128 KB SRAM, and a compact 64-ball WLCSP package measuring 4.42 x 3.42 mm. A microcontroller (MCU) integrates a processor core, memory, and peripherals on a single chip, forming the compute backbone of embedded systems within the wider hierarchy of semiconductor devices (MCU -> processor -> integrated circuit -> semiconductor). The SAM4S family, based on the ARM Cortex-M4 RISC core, adds a Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set, making it a mid-range workhorse between simpler Cortex-M0+ parts and higher-end Cortex-M7 devices. Key features include the 120 MHz Cortex-M4 core with hardware DSP support, 1024 KB dual-bank Flash with ECC, Security Bit and lock functionality, and a multi-layer bus matrix with multi-channel DMA for high data-rate communication. Atmel's Flash read accelerator with optional cache memory boosts effective execution speed, while power consumption is approximately 200 uA/MHz, and supply operation spans 1.62 V to 3.6 V for battery-friendly designs. Technically, the dual-bank Flash architecture enables safe in-application firmware updates (bank swap without an external bootloader), while ECC protects against single-bit Flash errors. The MPU supports functional-safety and RTOS memory partitioning. The SAM4S series is pin-to-pin and software compatible with SAM3N, SAM3S, SAM4N, and SAM7S legacy series in matching pin counts, providing a smooth migration path from Cortex-M3 designs. Typical applications include industrial control and automation nodes, portable and wearable devices where the 4.42 x 3.42 mm WLCSP footprint saves board space, and IoT sensor endpoints requiring DSP capability for signal processing. The industrial temperature rating supports harsh environments. Design consideration: WLCSP packages require precise PCB land-pattern design and reflow control; a via-in-pad or fanout strategy is needed to route 64 balls on two or more signal layers. Verify Flash wait-state settings at 120 MHz per the SAM4S family datasheet (document 60001419). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, combining verified web data from Mouser, DigiKey, LCSC, and Octopart as of 2026-09-20.

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ATSAM4S16BB-ANR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16BB-ANR

ATSAM4S16BB-ANR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16BB-ANR is a 32-bit ARM Cortex-M4 flash microcontroller in the SAM4S series, operating at up to 120 MHz with 1 MB (1M x 8) of embedded Flash and housed in a 64-pin LQFP (10 x 10 mm) surface-mount package. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single chip, sitting at the heart of embedded systems as the central element of the power-management and control hierarchy. The ARM Cortex-M4 architecture targets mid-range embedded control, combining 32-bit processing performance with deterministic real-time behavior and low interrupt latency. Key features of the ATSAM4S16BB-ANR include the high-performance Cortex-M4 RISC core at 120 MHz, 1 MB of embedded Flash with optional dual-bank implementation and cache memory, and very low power consumption of approximately 200 uA/MHz as stated on the Microchip product page. The supply range of 1.62 V to 3.6 V supports both 1.8 V and 3.3 V systems, and the peripheral set includes a full-speed USB Device port per the SAM4S family datasheet. The SAM4S series architecture adds a hardware integer multiplier-accumulator (MAC), optional floating-point-style DSP instructions from the Cortex-M4 core, and an embedded 16 KB ROM containing boot loader routines (UART, USB) and IAP (In-Application Programming) routines, simplifying field firmware updates without external programming hardware. Typical applications include industrial automation and control nodes, consumer appliances, and USB-connected embedded devices, where the combination of 1 MB Flash, 120 MHz throughput, and a USB Device port covers data logging, HMI, and bridging roles. The 64-pin LQFP makes it a natural upgrade or consolidation path within legacy boards. A key design consideration: the ATSAM4S16BB-ANR is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N, and SAM7S legacy series in the 64-pin version, allowing designers to migrate older designs with a footprint-preserving swap, though software must be recompiled for the Cortex-M4. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found in the manufacturer datasheet alone.

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